code cleanup (#135)

* code cleanup

Remove dead code and unused imports around preview features.

* Remove unused config option [display]show_preview

* Remove config option [preview]preview_images

* Remove unused imports

* Remove dead code and unused imports

1 files changed, 5 insertions, 11 deletions

diff --git a/src/preview/preview_default.rs b/src/preview/preview_default.rs
index 56947b6..8a216c9 100644
--- a/src/preview/preview_default.rs
+++ b/src/preview/preview_default.rs
@@ -3,14 +3,8 @@ use std::path;
 use crate::context::AppContext;
 use crate::fs::JoshutoMetadata;
 use crate::preview::{preview_dir, preview_file};
-use crate::ui::TuiBackend;
-
-pub fn load_preview_path(
-    context: &mut AppContext,
-    backend: &mut TuiBackend,
-    p: path::PathBuf,
-    metadata: JoshutoMetadata,
-) {
+
+pub fn load_preview_path(context: &mut AppContext, p: path::PathBuf, metadata: JoshutoMetadata) {
     let preview_options = context.config_ref().preview_options_ref();
 
     if metadata.is_dir() {
@@ -32,13 +26,13 @@ pub fn load_preview_path(
             .is_none();
 
         if need_to_load {
-            preview_file::Background::preview_path_with_script(context, backend, p);
+            preview_file::Background::preview_path_with_script(context, p);
         }
     } else {
     }
 }
 
-pub fn load_preview(context: &mut AppContext, backend: &mut TuiBackend) {
+pub fn load_preview(context: &mut AppContext) {
     let mut load_list = Vec::with_capacity(2);
 
     let curr_tab = context.tab_context_ref().curr_tab_ref();
@@ -57,6 +51,6 @@ pub fn load_preview(context: &mut AppContext, backend: &mut TuiBackend) {
     }
 
     for (path, metadata) in load_list {
-        load_preview_path(context, backend, path, metadata);
+        load_preview_path(context, path, metadata);
     }
 }